Controlling mechanism for gasoline tanks



Dec. 25, 1928. 1,696,541

N. A. CARLSON CONTROLLING MECHANISM FOR GASOLINE TANKS Filed Aug. 1927 IN VEN TOR.

A TTORNEYS.

Patented Dec. 25, 1928.

urrsn STATES rrsNT OFFICE.

NELSON A. CARLSON, OF ERIE, PENNSYLVANIA, ASSEGNOR 'IO ERIE METER SYSTEMS, INC., 015 ERIE, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

CONTROLLING MECHANISM FOR GASOLINE TANKS.

Applicationfiled August 6, 1927. Serial No. 211,176.

Gasoline stations are ordinarily provided with a dispensing tank holding gasoline and air supplying means for putting pressure on the tank so that the gasoline is delivered to the dispensing point from the air pressure. In case of fire these pressures operating in connection with the gasoline supply are a menace and the present invention designed to improve the construction by cutting oh the pressure connections. Features anddetails of the invention will appear from the Specification and claims. N p,

A preferred embodiment, or exemplihcation of the invention is illustrated in the accompanying drawings as follows z.-

Fig. 1 shows aside elevation of the mechanism.

Fig. 2 a central section through one of the controlling valves.

Fig. 3 a plan view of a portion of one of the controlling valves. V

1 marks the dispensing tank, '2 an air receiver, and 3 an air pump.

The air receiver is connected to the tank by means of a pipe 4, a self-closing valve 5, a regulating valve 6, and a self-closing nonreturn valve 7 and pipes.

The valves 5 and 7 are of the same structure except that the parts are reversed and in Fig. 2 is shown a section ot one of these valves in closed position, such valves being shown in open position in Fig. 1.

9 marks the valve body and 10 the valve seat. A valve head 11 operates on the seat and supplied with guide extensions 12 which operate on the barrel in the valve body to actuate the head. A spring 1?) yieldingly moves the valve to its seat. A pin l-Zl projects from the head 11 and is provided with a slot- 15 at its end. An arm 16 operates in the slot 15. The arm is mounted on a squared portion 17 of a valve stem 18. A. handle 19 ispivotally mounted on the stem 18 and adapted to turn the stem 17 to rock the arm 16. By rocking the arm 16 the valve 11 may 1 my h and.

he opened against the force of the spring.

A fusible link 21 is secured to the body bv a screw This link has a shoulder which is engaged by the handle 19 so as to lock the valve in open position. W hen the valve is subjected to any ten'iperat-ure above that of fusing the link the link is fused and the valve is instantly closed through the action of the spring and held closed through the pressure.

Safety valves 23 extend from the body 9 and pressure gauges 2 1 also extend from t-hebody of the valves, this forming a convenient mounting for these parts.

In case ot' the and a temperature raising the fusing temperature. of either link thisparticular valve is closed. Thus the high pressure air is automatically closed against the gasoline tank and if the gauges and differential valve 6 should be injured the nonreturn valve 7 will prevent an escape of vapors from the tank and thus minimize the danger. The structure permits of carrying, therefore, somewhat higher pressure on the tank 2 than would ordinarily be advisable.

What I claim as new is 1. In a controlling mechanism for gasoline tanks, the combination of a pressure fluid supply means; a conduit leading from the means to the tank; a self-closing valve in the conduit; and thermally controlled de vices securing the valve in open position and releasing the same under abnormal heat.

in a. controlling mechanism for gasoline tanks, the combination of a pressure fluid supply means; a conduit leading from the means to the tank; a valved mechanism con trolling the conduit agaii'ist flow through the conduit in both directions; and thermally contr llcd devices controlling the mechanism to maintain the conduitin open condition and releasing said mechanism to close the conduit under abnormal heat.

In testimony whereof I have hereunto set- NELSON A. CARLSON. 

